Leading up to her final season premiere, Oprah says she spent a lot of time racking her brains, thinking of a way to top all those cheesesteaks. "[I thought], ''Would it be another trip to Philly? Or maybe New York or L.A.?,'" she says. "And then I thought: 'Gee, maybe I ought to think bigger. Because, after all, this really is my 25th season, and this is really my last chance to do something big.'"